Unsmoothed car battery charger - is it crap?

His teletype obviously needs adjusting.

THIS POST IS CRAP

I AM PROTEUS

how do you deal with mains fluctuations?

How do you do it with any battery charger? Hint: You don't. It would require the AC line to be well out of tolerance, either high or low before the charging current would change more than a few percent. That is what a transformer does. I used a 24 volt 15 amp transformer after the variac. That reduces the change in line voltage by a factor of 5 to 1. The variac raises it to around 7 to one at the five amp charge rate I use most of the time, so the line voltage would have to go up to 128.4 for a 1% rise in the transformer's secondary voltage. The change in charging current is quite small.

If the battery is quite low, or dying I have a garage type charger that will start most car engines, even with no battery in the vehicle. It has no adjustments, other than a mechanical timer to set the charge time.

Yawn

e:

I THINK SAW YOU AT THE FIREWERX DISPLAY

BURRRRRRP

I AM PROTEUS

I believe it was the bulb rectifier chargers that had a bad-news side effect.

They were half-wave, directly coupled to the line. If a shop had a large one, & not much other loads; the pole pig transformer core would start to saturate with DC.

And when it did... it would fail rather spectacularly.... as in KaBoom...